Log Car
	This is one of the simpler cars to build. The problem here is the weight. There is no place to add enough weight that can be concealed. I made a pocket in the center beam and added tungsten powder. More weight is needed to make this car run reliably. I might need to add some hard wood as lumber load. I'll also try to make a molded lead as weight in the pocket instead of Tungsten powder because solid lead is heavier in the same volume than powdered Tungsten.